Pith Number

pith:Z5NSVMA7

pith:2003:Z5NSVMA7TJ5QX2ISXNIGSNT6IE

not attested not anchored not stored refs pending

A Physical Model for the joint evolution of QSOs and Spheroids

A. Bressan, G. de Zotti, G.L. Granato, L. Danese, L. Silva

arxiv:astro-ph/0309420 v1 · 2003-09-16 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Z5NSVMA7TJ5QX2ISXNIGSNT6IE}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:47:43.797230Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cf5b2ab01f9a7b0be912bb5069367e4137bebdde5741f50a05ce07e8e2f73d2e

Aliases

arxiv: astro-ph/0309420 · arxiv_version: astro-ph/0309420v1 · doi: 10.48550/arxiv.astro-ph/0309420 · pith_short_12: Z5NSVMA7TJ5Q · pith_short_16: Z5NSVMA7TJ5QX2IS · pith_short_8: Z5NSVMA7

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/Z5NSVMA7TJ5QX2ISXNIGSNT6IE \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: cf5b2ab01f9a7b0be912bb5069367e4137bebdde5741f50a05ce07e8e2f73d2e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f5bca4e1f12fbd216b5c6df5dcb6cb9fc6be409bafa7a206eb41bd13b1b4ca51",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-09-16T07:40:12Z",
    "title_canon_sha256": "8d63a7f6c4e1f236d4bb58d6eef170fd9a219a488d09f20ddbd31cc1e0181388"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0309420",
    "kind": "arxiv",
    "version": 1
  }
}